Counters

The CD54/74HC190 are asynchronously presettable BCD decade Counters whereas the CD54/74HC191 and CD54/74HCT191 are asynchronously presettable binary Counters Presetting the Counter to the number on preset data inputs (AD) is accomplished by a low asynchronous parallel load (LOAD) input. Counting occurs when LOAD is high, count enable (CTEN) is low, and the down/up (D/U) input is either high for down counting or low for up counting. The Counter is decremented or incremented synchronously with the low-to-high transition of the Clock By Texas Instruments
Part Manufacturer Description Datasheet Samples
CD54HCT191F3A Texas Instruments High Speed CMOS Logic Presettable Synchronous 4-Bit Binary Up/Down Counter 16-CDIP -55 to 125
CD54HCT191H Texas Instruments HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, UUC16, DIE
CD54HCT191F Texas Instruments HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDIP16, CERAMIC, DIP-16
5962-8867101EA Texas Instruments High Speed CMOS Logic Presettable Synchronous 4-Bit Binary Up/Down Counter 16-CDIP -55 to 125
CD54HCT191 's PackagesCD54HCT191 's pdf datasheet



CD54HCT191 Pinout, Pinouts
CD54HCT191 pinout,Pin out
This is one package pinout of CD54HCT191,If you need more pinouts please download CD54HCT191's pdf datasheet.

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